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Finding the Fourth Proportional to 2,989.01, 4,483.52 and 909.01

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Solution

The fourth proportional to 2,989.01, 4,483.52 and 909.01 is: 1,363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.01 : 4,483.52 = 909.01 : x
  2. Step 2: Convert to fraction form
    2,989.01/4,483.52 = 909.01/x
  3. Step 3: Cross multiply
    2,989.01x = 4,483.52 × 909.01
  4. Step 4: Simplify right side
    2,989.01x = 4,075,548.76
  5. Step 5: Solve for x
    x = 4,075,548.76/2,989.01
  6. Step 6: Final answer
    x = 1,363.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.